<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<style>
   a{
      background: red;
      font-size: 32pt;
   }
</style>
<link rel="stylesheet" type="text/css" href="01.css">
<title>Insert title here</title>
</head>
<body>
<a>内嵌式</a>
<p style="background: green; font-size: 20px">
行内样式
</p>
<b>链接式</b>
</body>
</html>